Variational RPA for the dipole surface plasmon in metal clusters

K. Hagino, G. F. Bertsch, C. Guet

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The deviation of the ionic background potential in simple metal clusters from the harmonic shape leads to a red shift of the surface plasmon from the Mie frequency, that is considerably larger than the spill-out correction. In order to estimate this effect, here we develop a variational approach to the RPA collective excitations. Using a simple trial form, we obtain analytic expressions for the energy shift beyond the spill-out contribution. We find that the additional red shift is proportional to the spill-out correction and has the same order of magnitude.

Original languageEnglish
Pages (from-to)347-354
Number of pages8
JournalNuclear Physics A
Issue number1-4
Publication statusPublished - 2004 Feb 9
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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